Use the principles of atomic structure and/or chemical bonding to explain each of the following. In each part, your answers must include references to both substances. a. The atomic radius of Li is larger than that of Be. b. The second ionization energy of K is greater than the second ionization energy of Ca. c. The carbon-to-carbon bond energy in C2H4 is greater than it is in C2H6. d. The boiling point of Cl2 is lower than the boiling point of Br2.

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